Orange Sirius Heavy Duty “Donut” Polyurethane on Aluminum Swivel Casters

Sirius heavy duty donut polyurethane on aluminum casters are engineered for high-capacity material handling in wash-down and corrosion-prone environments. The aluminum core resists rust and reduces wheel weight, while the polyurethane tread delivers floor protection and lower rolling resistance.

Wheel diameters

4"–8" (series-dependent)

Typical load range

Up to ~1,250 lbs per caster (varies by size/config)

Best environments

Wet, wash-down, chemical exposure, corrosion risk

Key limitation

Not intended for high-impact / shock-load abuse

Engineering guidance

Why specify polyurethane on aluminum

Aluminum core: corrosion resistance for wash-down and chemical exposure
Polyurethane tread: non-marking floor protection with smoother roll than rubber
Lower rolling resistance: supports ergonomic push/pull performance on smooth floors

When to choose a different wheel/core

Impact / shock loading: consider tougher cores and wheel constructions designed for abuse
Rough floors / debris: consider tread profiles and materials optimized for obstacles and seams
Powered towing: specify a solution designed for continuous towing loads and duty cycles

Common applications